Box-making machine.



No. 876,506. PATENTED JAN. 14, 1908. E. L. THURBBR. BOX MAKING MACHINE.

APPLICATION FILED JAN. 8, 1907. I

4 SHEETSSHEET 1.

A TTOHNE Y WITNESSES E E INVENTOR- By owa No. 876,506. PATENTED JAN. 14, 1908.

E. L. THURBER.

BOX MAKING MACHINE.

APPLICATION FILED JAN. 8, 1907.

WITNESSES WVENTQI? Dam) h, 1m w.

ATTORNEY I 4SHEETB-SHEET 2.

PATENTED JAN. 14, 1908.

E. L. THURBER. BOX MAKING MACHINE.

APPLICATION-FILED mum 190v 4 SHEETS-SHEET s.

INVENTOH W/TNESSES Q @Q: I 8) v ATTORNEY frames a and at view EDWIN L. 'rnuannn,

OF NEW YORK, N. Y., ASSIGNOR TO DUNHAM MANUFACTURING COMPANY, A CORPORATION OF NEW YORK.

BOX-MAKING MACHINE.

Application filed January 8,1907- Serial No. 351324.

To all whom it may concern: Be it known that BER, a citizen of the United States, residing in the city of New York, in the county of Kings and State of New certain new and useful Improvements in Box-Making Machines, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in machines for closing the ends of cartons; and one object of my invention is to provide a machine of this class which will be simple in construction and eiiicient in operation.

In the drawings illustrating the principle of my invention and the best mode now known to me of applying that principle,Figure 1 is a side elevation of my new machine; Fig. 2 is a plan view thereof; Fig. 3 is an end thereof, the flap-tucking mechanism being removed; Fig. 4 illustrates the'gluing mechanism, partly in sectional elevation, and the flap-folding mechanism at the front end of the machine; Fig. 5 shows a'carton-holder for an empty carton; Fig. 6 represents a carton-holder for a filled carton; Fig. 7 is a plan view of the press rolls and of the stationary flap-turning mechanism for the side flaps of the carton; Fig. 8 shows the mode of attachment of the carton-holder to the endless sprocket-chain; Fig. 9 is a detail of the ejecting-rod of the carton-holder for an empty cartonj Fig. 10 is,a vertical central longitudinal section of the carton-holder for a filled carton; Fig. 11 is a plan of the cartonholder for a filled carton; and Fig. 12 is a detail in plan of the flap-tucking mechanism at the front end of the machine.

Referring to Figs. 1, 2- and 3, the mechanism is suitably supported on the side-frames a at the front end of which is journaled the driving shaft 1) the outer end of which carries a driving pulley c and a transmission pulley d, the latter being belt-connected with the small pulley e fast upon the shaft which carries the glue-roll g. U on the shaft b is mounted fast the sprocket between the side the other or rear end of the machine is mounted the, idle shaft i upon which'is mounted fast the sprocket wheel j. Over the sprockets h and passes carrier-chain 7c the degree of slackness of which is controlled by the. adjusting screws 1, EDWIN LYONS TnUR- York, have invented" an endless Specification of Letters Patent.

base-plate t which, in turn,

Patented Jan. 14:, 1908.

m one end of which is provided with the hand-wheel n and the other end of which engages a journal box 0 in which the shaft 1) takes abearing. Each screwmpasses through a threaded aperture in a post p and by turning the ha dheel n'the journal box o is moved back and forth on the guides q (Fig. 2).

At intervals along the endless carrier-chain 7c, there are secured thereto carton-holders, two forms of which are shown in Figs. 5 and 6. The form shown in Fig. 5 is for the empty carton and comprises a wooden block 1" provided with a metal top-plate s and secured to.

the base-plate t by means of angle-pl ates u. The block 1' is formed with a central slot 11 through which extends an ejecting rod to provided near its middle with the holding collars as on each side of the block 7. The base-plate t is secured to two ears 3 which, in turn, are secured to a link of the carrier chain k (Figs. 8 and 9).

The carton-holder shown in Fig. 6 is adapted and designed for the reception of a filled carton and comprises a box-like casin 2 open at its top and having its walls rovi e with vertical central slots 3 througli two of which extends the ejecting rod to provided with holding collars 5 inside the casing.

The side walls are suitably secured to the v is secured to the case of the form Within the casing 2- is secarrier-chain k, as in the shown in Fig. 5. cured a wooden tral groove 5 in its topupor'fthe bottom of which groove rest the collars 5 (Figs. 10 and 11). The block 4 is secured in the casing by screw 6 and it may be of various heights in order to support suitably cartons of different capacities.

The carton 7 is provided at its top and at itsbottom with two narrow flaps 8, 9 and two wide flaps 10, 11 (Figs. 6 and 7). In

block 4 formed with a cen-- closing the end of the carton, the narrow flaps are first turned in and then the wide flaps. To fold the la 8 the following mechanism is provided gee Figs. 4 and 12): Mounted near the front end of the machine are two pairs of posts 12, 13 which carry at their upper end the shafts 14, 1. 5 respectively. Upon the shaft 14 is adjustably secured the arm 16, and a crank-arm 17 connected by a link 18 with the crank-arm 19 adjustably secured to the shaft 15. The latter is provided also with the crank-arm to which is smoothly between them. To each of these secured one end of the coil spring 21, the bars is securedastationary flap-folder 41 the other end of which is secured to one of the surface of which is warped or helical at its posts 12. Near themiddle of the shaft 15 is front end and concave towards the cartonadjustably mounted the flaptuc'ker 22- and holder, and terminates at its rear end in a at one end of the same shaft is secured the plane flat surface, as is best shown in Fig. 7.

' block 23 formed with shoulders 24 which co- Between the flap-folders 41 is mounted a operate with one of the posts 13 to limit the late 42 (Fig. 7); and to each bar 40 just in rotary movement of the shaft 15. The fiont of the opening or front end of each flaplower end of the arm 16 is in the path of one folder is secured a guide 43 (or 46) which end of the'rod 112 (Fig. 1), as the latter travels serves to raise the flap 11 (or 10) and guide it r from front to rear of the machine. Thus, into the folder 41 and thereby to prevent the lower or free end of the latter will strike the certained (Fig. 7). v ha 8 and tuck it under the rod 25 (see dot- At the rear end of themachine are mountthe arm 16 is swung from front to rear at its breaking off of the fla by a too abrupt meetlower end and thereby causes-the shaft 14 to ing with the wall of t 1e folder 41. The flap rock. Rocking of the shaft 14 causes rock- 10 will be first folded down, as shownin Figs. ing of the shaft 15 through the crank-arms 17 6 and 7 and will be held down by the plate 42 and 19 connected by the link 18 and rockuntil the flap 11 is turnedinoverit. The flaps ing of the shaft 15 extends the coil spring ,2]. are pressed down by the press-rolls 44, one of and draws to thefront the lower end of the which (45) is provided or formed with raised flap-tucker 22, as is indicated bythe solid letters by which any desired informationlines in Fig. 4. At a certain point of its may be printed upon the end of the carton.

travel the rod w will pass under and release Secured to the press roll 45 is a shaft 47 the arm 16, whereupon the coil spring 21 will which drives a counting mechanism shown rock the shaft 15 in the opposite. direction conventionally at 48, by which the number and throw the flap-tucker to the rear The of cartons closed by the machine may be aste lines in Fig. 4). The latter folds ined a pair of inclined arms 49 the free ends 50 wardly and downwardly the other narrow of which are curved; and up each arm 49 flap 9 and is secured to a plate 26 the rear end rides one end of the ejecting rod w, thereby of which is riveted to the brackets 27 suitably forcing the empty carton from theblock ror secured to the front side of the glue box or the filled carton from the casing 2 (Figs. 1 vat 28.- The free front end of the plate 26 is and 2).

formed with curled edges'29 which serve to Mounted upon the supports 51 and express outwardly and downwardly the wide tending from front to rear of the machine flaps 10, 11, until they take the position parallel to each other are apair of angle-bars 10c which theyare shown as having in Fig.7. 52 to the side of each of which is suitably se- The glue box or vat 28 is open at its rear cured a metal bar or rail 53 between which side and within this opening rotates the glue and the bottom ofthe angle-bar travels one roll g mounted upon the shaft f, as hereinedge of the base-plate t, which bythis conbefore described. Beneath the glue box 28 struction is securely held and guided in its are secured two leaf springs 30 the free end travel from front to rear of the machine of each of which rubs against one ofthe flaps (Fig. 5). I 10, 11 and presses it against the glue-roll 9. To regulate the amount of glue which the The latter is formed with a central circumroll 9 takes up, there is adjustably mounted ferential groove 31 which prevents the roll in the bottom of the box 28 a plate 54 profrom contacting with the rod 32 by which vided with threaded tangs 55 each engaged the flaps-8, 9 are held down in rear of the glue by an adjusting nut 56 and a lock-nut 57 roll one end of which rod is secured to the (Fig. 4). arm 33 and the other end of which is held I claim:

against springing up bythe brace 34. The 1. In a machine of the class described, the

latter and the arm 33 are secured to the post combination of a holder for the carton; mech- 35. To make the glue box 28 tight its side anism for moving said holder a stationary walls are provided with the vertical metal flapfolding device having a curved surface; strips 36 between which and the flanges: 37 and a guide for directing the flap into said is inserted packing 38. This construction is folder, said guide being in advance of the found to prevent the glue from leaking out folder and serving to raise the flap preparapast the ends of the glue roll 9. tory to its entry into the folder.

Supported by the cross-pieces 39 and ex 2. In a machine of the class described, the tending from just in front of the plate 26 to mbination of a carton-holder formed with near the rear end of the machine along the cena slot a rod which extendsthrough and is tral line thereof are two parallel metal bars 40 freely movable in said slot and the ends of thefront end 60 of each of which flares outwhich 'project. beyond the opposed slotted wardly to allow the end of the carton to pass Walls of said carton-holder; and devices pro'ect beyond the opposed slotted walls of sai holder; and a pair of inclined arms mounted on said frame, each of said arms being positioned to rub against one of the projecting ends of said ejecting rod to force the carton from its holder.

4. In a machine of the class described, the combination of a holder for the carton; mechanism for moving said carton-holder; a pair of interconnected shafts, one of which isSpringcontrolled and the other of which is controlled by said holder; mechanism mounted on said other shaft and adapted to be engaged by said holder in its travel; and a flap-folding device mounted on one of said shafts.

5. In a machine of the class' described, a flap-folding mechanism comprising a pair of cooperating parallel shafts, one of which is spring-controlled and the other of which is provided with an arm for turning the same;

a flap-folder upon one of said shafts; and means for swinging said arm to turn said shafts' 6. In a machine of, the class-described, the

combination of a holder for the carton; a carton-electing device-movably mounted in said ho der; mechanism for moving said holder; means for moving said device to eject the carton from the holder; and a fiapfolding mechanism controlled by said device.

7. 1n a-machine of the class described, a flap-folding mechanism consisting of the combination of a supporting frame; aholder for the carton; mechanism for moving said holder relatively to said frame; a pair of interconnected shafts mounted upon said frame, one of said shafts being provided with an arm which normally lies in the path of travel of ,said holder; a flap-folder mounted upon one of said shafts; and automatic devices for restoring said arm to its original position, after it has been displaced therefrom by said holder.

In testimony whereof I have hereunto set my hand this seventh day of January, A. D;

1907 in the presence of two witnesses.

EDWIN L. THURBER.

WVitnesses JAMES HAMILTON, ELLEN M. Lnwrs. 

